The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2012
Filed:
Jun. 29, 2010
Yaojian Lin, Singapore, SG;
Haijing Cao, Singapore, SG;
Qing Zhang, Singapore, SG;
STATS ChipPAC, Ltd., Singapore, SG;
Abstract
A semiconductor device has a substrate with an inductor formed on its surface. First and second contact pads are formed on the substrate. A passivation layer is formed over the substrate and first and second contact pads. A protective layer is formed over the passivation layer. The protective layer is removed over the first contact pad, but not from the second contact pad. A conductive layer is formed over the first contact pad. The conductive layer is coiled on the surface of the substrate to produce inductive properties. The formation of the conductive layer involves use of a wet etchant. The second contact pad is protected from the wet etchant by the protective layer. The protective layer is removed from the second contact pad after forming the conductive layer over the first contact pad. An external connection is formed on the second contact pad.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile